I think he confuses unhappiness with annoyance. Let me give a real world example. Almost everyone has been in line for an ATM at one time or another and been

I think he confuses unhappiness with annoyance. Let me give a real world example. Almost everyone has been in line for an ATM at one time or another and been stuck behind someone who clearly can't comprehend the machine. It's very annoying. If you talk to a person waiting in line under those circumstances they will seem like an unhappy person. But talk to them once they are on their way and they'll not only seem happy but probably hold no ill will towards the person who couldn't grasp the machine (because they realize the person had no malice they just couldn't do that paticular task). To me that's a little what IT is like. You catch someone in the middle of fixing a few seemingly stupid mistakes or after a day filled with them and they'll seem unhappy. Same with programming. Nothing's more annoying then spending a half hour tracking down a problem only to find someone didn't increment in a loop (or some other stupid mistake). But given time the rational mind kicks in, realizes everyone makes mistakes, and is back to being happy with their job.